EP1108402B1 - Accomodating intraocular lens - Google Patents

Accomodating intraocular lens Download PDF

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Publication number
EP1108402B1
EP1108402B1 EP00203860A EP00203860A EP1108402B1 EP 1108402 B1 EP1108402 B1 EP 1108402B1 EP 00203860 A EP00203860 A EP 00203860A EP 00203860 A EP00203860 A EP 00203860A EP 1108402 B1 EP1108402 B1 EP 1108402B1
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Prior art keywords
lens
centering
artificial
spring
artificial lens
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EP00203860A
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German (de)
French (fr)
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EP1108402A2 (en
EP1108402A3 (en
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Hans-Georg Dr. Rer. Nat. Boehm
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2/1613—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2/1613—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
    • A61F2/1624—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside
    • A61F2/1629—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside for changing longitudinal position, i.e. along the visual axis when implanted

Definitions

  • an artificial lens To correct cataract surgery, the natural lens of the eye is replaced by an artificial lens.
  • Such art lenses usually have the form of a paragraph mark, with the protruding s-shaped brackets serve for their centering in the cavity of the removed natural lens.
  • these plastic lenses are very flexible in the wet state and can even be folded for insertion into the eye by the smallest possible slot, but they are no longer convex deformable, as is the case for accommodation in natural eye lenses.
  • An artificial lens has just a fixed focal point, therefore, a sharpness of before or after lying pixels must be approximated by fitted eyeglass lenses. The resulting unavoidable blurring in the transitional areas causes a significant loss of visual comfort, which has to be reduced by an improved focusable artificial lens and offers the opportunity to dispense with corrective glasses altogether.
  • FIG. 1 shows a focussable artificial lens with only one articulated joint, as it is modeled on the CUMMING lens (general state of the art). In this artificial lens, the sensitivity at compression and the offset (9) remained unsatisfactory.
  • Fig. 2 By z-like centering springs (2) with two articulated joints (3) on the web (14) according to the invention, however, the offset (9) is effectively increased.
  • the central part of the web of the centering springs is cuboid, so that its front against the front capsular bag membrane (17 in Fig. 3) and its back against the front glass body boundary membrane (16 in Fig. 3). This supports the return of the artificial lens through the capsule bag, which is stretched meridionally during dilatation.
  • the support tabs (13) at the end of the centering springs nestle with their back against the front vitreous body boundary membrane and prevent the sole buckling only of the outer articulation.
  • the compressed, elastic centering springs With a relaxed sphincter muscle, the compressed, elastic centering springs automatically stretch back to their original initial shape after a dilatation and pull the artificial lens back to its resting position.
  • the restoring properties of the centering springs are further stiffened for faster recovery of deformation by a partial chemical or physical treatment (eg, more crosslinked by UV irradiation) or by a partial moisture repellent surface seal (reducing the softening flux influence).
  • Fig. 3 shows the deformation of a Z-like centering spring in contraction of the circular muscle.
  • the angle of the imaginary oblique connecting line (15) between the two articulated joints and the optical axis of the artificial lens is depending on the deformation between about 45 to 50 degrees, so in this area is the maximum, there also almost linear sensitivity of this Akkomodationsapparates used.
  • Fig. 4 shows the production of an artificial lens with stretched centering springs in hard aggregate state, so even before it becomes soft elastic in water vapor. When implanted, compressed in a Z-like shape, the artificial lens thus returns to its resting position more quickly after dilatation due to this stronger deformation.

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

The focussable artificial intraocular lens (1) replaces an opaque natural lens in cataract operations and has two bending links (3) on the rib (14) of the Z-shaped centering springs. Four centering springs (2) extend from the edge of the artificial lens, bend in a spring fashion on the capsule sac edge and center the lens. Two bending links (3) are provided on the narrow rib of a centering spring (5). A folding line allows the lens to be folded together before insertion. A grip periphery (6) of the contractable ring muscle is provided. A hollow space remains as capsule sac (7) after removal of the opaque natural lens. A displacement (9) of the artificial lens occurs by contraction of the ring muscle, altering the lens distance from the retina. A cross-section (12) is indicated of a support lob (13) at the ends of a centering spring. The middle part (14) of the rib of a centering spring is not deformable. A theoretical connecting line (15) is inclined between the undeformed bending links by approximately 40 degrees against the optical axis of the artificial lens.

Description

Stand der Technik:State of the art:

Zur Behebung des grauen Stars (Linsentrübung) wird bei Kataraktoperationen die natürliche Augenlinse durch eine Kunstlinse ersetzt. Solche Kunstlinsen besitzen in der Regel die Form eines Paragraphenzeichens, wobei die abstehenden s-förmigen Bügel zu Ihrer Zentrierung im Hohlraum der entfernten Naturlinse dienen. Diese Kunstlinsen sind zwar in feuchtem Zustand sehr flexibel und können zum Einsetzen ins Auge durch einen möglichst kleinen Schlitz sogar gefaltet werden, doch sie sind nicht mehr konvex verformbar, wie dies zur Akkomodation bei natürlichen Augenlinsen der Fall ist. Eine Kunstlinse hat eben nur einen unveränderlichen Brennpunkt, deshalb muß eine Schärfe von vor oder danach liegenden Bildpunkten durch angepaßte Brillenlinsen angenähert werden. Die daraus resultierende unvermeidliche Unschärfe in den Übergangsbereichen bedingt einen erheblichen Verlust an Sehkomfort, den es durch eine verbesserte fokussierfähige Kunstlinse zu mindern gilt und die die Chance bietet, auf Korrekturbrillen ganz verzichten zu können.To correct cataract surgery, the natural lens of the eye is replaced by an artificial lens. Such art lenses usually have the form of a paragraph mark, with the protruding s-shaped brackets serve for their centering in the cavity of the removed natural lens. Although these plastic lenses are very flexible in the wet state and can even be folded for insertion into the eye by the smallest possible slot, but they are no longer convex deformable, as is the case for accommodation in natural eye lenses. An artificial lens has just a fixed focal point, therefore, a sharpness of before or after lying pixels must be approximated by fitted eyeglass lenses. The resulting unavoidable blurring in the transitional areas causes a significant loss of visual comfort, which has to be reduced by an improved focusable artificial lens and offers the opportunity to dispense with corrective glasses altogether.

Auch ohne diagnostizierte Linsentrübung können später einmal gut fokussierenden Kunstlinsen, in gesunde Augen eingesetzt, die kostspieligen Laserabtragungen der Hornhaut zur Beseitigung starker Kurzsichtigkeit ersetzen und einer Altersweitsicht vorbeugen.Even without a diagnosis of lens opacification, well-focused artificial lenses, which are used in healthy eyes, can replace the costly laser ablation of the cornea to remove severe myopia and prevent the onset of long-term vision.

Statt durch Änderung der Konvexität steht als Alternative zur Akkomodation mit Kunstlinsen nur eine Änderung des Linsenabstandes von der Netzhaut (Versatz) durch den kontrahierenden Ringmuskel zur Verfügung, vorausgesetzt dieser blieb nach Entfernung der Naturlinse unbeschädigt und aktiv.Instead of changing the convexity, as an alternative to accommodation with artificial lenses, only a change in the lens distance from the retina (offset) through the contracting sphincter is available, provided that it remains undamaged and active after removal of the natural lens.

Fokussierfähige Kunstlinsen für Augen mit zwei Knickgelenken an den Zentrierfedern sind bereits aus dem Dokument WO 99 03427 A (ISRAEL HENRY M) 28. Januar 1999 (1999-01-28) bekannt. Weil diese Knickgelenke nahezu parallel zur Linsenebene ausgerichtet sind, erfordert dies eine ungleich größere Kontraktionskraft des Ringmuskels, um eine Axialverschiebung der Linse zu erzielen, als wie dies mit einem ideal um 50 Grad gegen die optische Linsenachse schräg gestelltem Mittelteil zwischen den beiden Knickgelenken der Zentrierfedern der Fall ist.Focusable art lenses for eyes with two articulated joints on the centering springs are already known from the document WO 99 03427 A (ISRAEL HENRY M) January 28, 1999 (1999-01-28). Because these hinges almost Aligned parallel to the lens plane, this requires a much greater force of contraction of the sphincter to achieve axial displacement of the lens, as is the case with an ideal 50 degrees against the optical lens axis inclined middle part between the two articulations of the centering springs.

Weitere Kunstlinsen sind aus WO 96 15734 A (ACUITY ISRAEL LIMITED; ISTAEL HENRY M (IL) 30. Mai 1996 (1996-05-30) und US-A-5 609 630 (CROZAFON PHILIPPE) 11. März 1997 (1997-03-11) bekannt.Further art lenses are disclosed in WO 96 15734 A (ACUITY ISRAEL LIMITED, ISTAEL HENRY M (IL) May 30, 1996 (1996-05-30) and US-A-5 609 630 (CROZAFON PHILIPPE) March 11, 1997 (1997-03 -11).

Problemlösung und Beschreibung:Problem solving and description:

Diese Aufgabe wird durch z-ähnliche Zentrierfedern gemäß Anspruch 1 gelöst.This object is achieved by z-like centering springs according to claim 1.

Fig. 1: zeigt eine fokussierfähige Kunstlinse mit nur einem Knickgelenk, wie sie der CUMMING'schen Linse (allgemeiner Stand der Technik) nachempfunden ist. Bei dieser Kunstlinse blieb die Empfindlichkeit bei Stauchung und der Versatz (9) noch unbefriedigend.FIG. 1 shows a focussable artificial lens with only one articulated joint, as it is modeled on the CUMMING lens (general state of the art). In this artificial lens, the sensitivity at compression and the offset (9) remained unsatisfactory.

Fig. 2: Durch z-ähnliche Zentrierfedern (2) mit zwei Knickgelenken (3) am Steg (14) wird erfindungsgemäß jedoch der Versatz (9) wirkungsvoll vergrößert. Der Mittelteil des Steges der Zentrierfedern ist quaderförmig ausgebildet, damit seine Vorderseite an der vorderen Kapselsackmembran (17 in Fig. 3) und seine Rückseite an der vorderen Glaskörpergrenzmembran (16 in Fig. 3) anliegt. Dies unterstützt die Rückführung der Kunstlinse durch den bei einer Dilatation meridional gedehnten Kapselsack.Fig. 2: By z-like centering springs (2) with two articulated joints (3) on the web (14) according to the invention, however, the offset (9) is effectively increased. The central part of the web of the centering springs is cuboid, so that its front against the front capsular bag membrane (17 in Fig. 3) and its back against the front glass body boundary membrane (16 in Fig. 3). This supports the return of the artificial lens through the capsule bag, which is stretched meridionally during dilatation.

Die Stützlappen (13) am Ende der Zentrierfedern schmiegen sich mit ihrer Rückseite an die vordere Glaskörpergrenzmembran an und verhindern das alleinige Einknicken nur des äußeren Knickgelenks.The support tabs (13) at the end of the centering springs nestle with their back against the front vitreous body boundary membrane and prevent the sole buckling only of the outer articulation.

Bei entspanntem Ringmuskel strecken sich die gestauchten, elastischen Zentrierfedern nach einer Dilatation selbsttätig in ihre ursprüngliche Ausgangsform zurück und ziehen dabei die Kunstlinse wieder in ihre Ruheposition. Beim üblicherweise verwendeten weichelastischen Linsenmaterial sind die Rückstelleigenschaften der Zentrierfedern zur schnelleren Rückbildung einer Deformation durch eine partielle chemische oder physikalisch Behandlung (bspw durch UV-Bestrahlung stärker vernetzt) oder durch eine partielle feuchtigkeitsabweisende Oberflächenversiegelung (reduziert den weichmachenden Flüßigkeitseinfluß) zusätzlich versteift.With a relaxed sphincter muscle, the compressed, elastic centering springs automatically stretch back to their original initial shape after a dilatation and pull the artificial lens back to its resting position. In the commonly used soft elastic lens material, the restoring properties of the centering springs are further stiffened for faster recovery of deformation by a partial chemical or physical treatment (eg, more crosslinked by UV irradiation) or by a partial moisture repellent surface seal (reducing the softening flux influence).

Fig. 3: zeigt die Verformung einer z-ähnlichen Zentrierfeder bei Kontraktion des Ringmuskels. Der Winkel der gedachten schrägen Verbindungslinie (15) zwischen den beiden Knickgelenken und der optischen Achse der Kunstlinse beträgt je nach Deformation zwischen ca. 45 bis 50 Grad, damit ist in diesem Bereich die maximale, dort auch nahezu lineare Empfindlichkeit dieses Akkomodationsapparates genutzt.Fig. 3: shows the deformation of a Z-like centering spring in contraction of the circular muscle. The angle of the imaginary oblique connecting line (15) between the two articulated joints and the optical axis of the artificial lens is depending on the deformation between about 45 to 50 degrees, so in this area is the maximum, there also almost linear sensitivity of this Akkomodationsapparates used.

Fig. 4: zeigt die Herstellung einer Kunstlinse mit gestreckten Zentrierfedern in hartem Aggregatzustand, also noch bevor sie im Wasserdampf weichelastisch wird. Bei einer Implantation, in z-ähnliche Form gestaucht, stellt sich die Kunstlinse durch diese stärkere Verformung somit schneller nach einer Dilatation in ihre Ruheposition zurück.Fig. 4: shows the production of an artificial lens with stretched centering springs in hard aggregate state, so even before it becomes soft elastic in water vapor. When implanted, compressed in a Z-like shape, the artificial lens thus returns to its resting position more quickly after dilatation due to this stronger deformation.

Bezeichnungen :Designations:

Fig. 1Fig. 1
Fokussierfähige Kunstlinse mit je einem Knickgelenk (3) am Steg (14) ihrer Zentrierfedern, dem CUMMING-Prinzip nachempfunden
  1. (1) Kunstlinse
  2. (2) vier vom Rand (1) der Kunstlinse abstehende Zentrierfedern
  3. (3) Knickgelenk am Ansatz der Zentrierfedern
  4. (5) Faltlinie zum Zusammenklappen der Kunstlinse vor dem Einschieben in den Kapselsack (7)
  5. (6) Angriffsumfang des kontrahierbaren Ringmuskels
  6. (7) Kapselsack, verbleibender Hohlraum nach Entfernung der getrübten Naturlinse
  7. (9) Versatz der Kunstlinse bei Kontraktion des Ringmuskels (6), Änderung des Linsenabstandes von der Netzhaut
  8. (10) bisher benutzte Form nicht fokussierender Kunstlinsen mit zwei s-förmigen Zentrierfedern, verkleinert dargestellt
  9. (14) Steg einer Zentrierfeder
Focusable artificial lens, each with an articulated joint (3) on the web (14) of their centering springs, based on the CUMMING principle
  1. (1) Artificial Lens
  2. (2) four centering springs projecting from the edge (1) of the artificial lens
  3. (3) Knuckle at the base of the centering springs
  4. (5) fold line for folding the artificial lens before insertion into the capsular bag (7)
  5. (6) Scope of attack of the contractible circular muscle
  6. (7) Capsular bag, remaining cavity after removal of the opacified natural lens
  7. (9) Offset of the artificial lens upon contraction of the circular muscle (6), change of lens distance from the retina
  8. (10) previously used form non-focusing art lenses with two s-shaped centering springs, shown in reduced size
  9. (14) Bar of a centering spring
Fig. 2Fig. 2
Fokussierfähige Kunstlinse mit je zwei Knickgelenken (3) am Steg (14) der z-ähnlichen Zentrierfedern
  1. (1) Kunstlinse
  2. (2) vier am Rand der Kunstlinse abstehende Zentrierfedern schmiegen sich federnd an den Kapselsackrand an und zentrieren die Kunstlinse
  3. (3) je zwei Knickgelenke am schmalen Steg einer Zentrierfeder
  4. (5) Faltlinie zum Zusammenklappen der Kunstlinse vor dem Einschieben
  5. (6) Angriffsumfang des kontrahierbaren Ringmuskels
  6. (7) Kapselsack, verbleibender Hohlraum nach Entfernung der getrübten Naturlinse
  7. (9) Versatz der Kunstlinse bei Kontraktion des Ringmuskels (6), Änderung des Linsenabstandes von der Netzhaut
  8. (12) Querschnitt eines Stützlappens (13) an den Enden einer Zentrierfeder
  9. (13) Stützlappen gegen die vordere Glaskörpermembran angelehnt, verhindern das alleinige Einknicken des oberen Knickgelenkes
  10. (14) nicht verformbarer Mittelteil des Steges einer Zentrierfeder
  11. (15) gedachte Verbindungslinie zwischen den undeformierten Knickgelenken, ca. 40 Grad gegen die optische Achse der Kunstlinse geneigt
Focusable artificial lens, each with two articulated joints (3) on the web (14) of the z-like centering springs
  1. (1) Artificial Lens
  2. (2) four protruding at the edge of the artificial lens centering springs nestle resiliently against the capsular bag edge and center the artificial lens
  3. (3) two articulated joints each on the narrow web of a centering spring
  4. (5) Folding line for folding the artificial lens before insertion
  5. (6) Scope of attack of the contractible circular muscle
  6. (7) Capsular bag, remaining cavity after removal of the opacified natural lens
  7. (9) Offset of the artificial lens upon contraction of the circular muscle (6), change of lens distance from the retina
  8. (12) Cross-section of a supporting lug (13) at the ends of a centering spring
  9. (13) Support lugs against the front vitreous membrane ajar prevent the sole buckling of the upper articulation
  10. (14) non-deformable middle part of the web of a centering spring
  11. (15) imagined connecting line between the undeformed articulated joints, about 40 degrees inclined to the optical axis of the artificial lens
Fig. 3Fig. 3
Verformung einer z-ähnlichen Zentrierfeder mit einem (A) oder zwei (B) Knickgelenken (3) bei Kontraktion des Ringmuskels (6)
  1. (1) Kunstlinse
  2. (3) Knickgelenke, als kleine Kreise dargestellt
  3. (6) Angriffsumfang des Ringmuskels
  4. (9) Versatz der Kunstlinse bei Kontraktion des Ringmuskels (6), Änderung des Linsenabstandes von der Netzhaut
  5. (14) nicht verformbarer Mittelteil des Steges einer Zentrierfeder
  6. (15) gedachte Verbindungslinie zwischen den undeformierten Knickgelenken
  7. (16) vordere Glaskörpergrenzmembran, an der Rückseite der Zentrierfeder und ihres Stützlappens anliegend
  8. (17) vordere Kapselsackmembran
  9. (18) hintere Kapselsackmembran mit angedeuteten Zonulafasern
  10. (19) z-ähnliche Zentrierfeder mit nur einem Knickgelenk, dadurch geringe Empfindlichkeit (Änderung des Versatzes gegen aufgewandte Stauchkraft)
  11. (20) die gedachte Mittellinie einer ungestauchten Zentrierfeder ist durchgehend, die der gestauchten ist dagegen gepunktet gezeichnet
Deformation of a z-like centering spring with one (A) or two (B) articulated joints (3) upon contraction of the circular muscle (6)
  1. (1) Artificial Lens
  2. (3) Articulated joints, shown as small circles
  3. (6) Scope of attack of the circular muscle
  4. (9) Offset of the artificial lens with contraction of the circular muscle (6), change of the lens distance from the retina
  5. (14) non-deformable middle part of the web of a centering spring
  6. (15) imaginary connecting line between the undeformed articulated joints
  7. (16) anterior vitreous membrane bordering the back of the centering spring and its support lobe
  8. (17) anterior capsular bag membrane
  9. (18) posterior capsular membrane with indicated zonular fibers
  10. (19) Z-like centering spring with only one articulated joint, thus low sensitivity (change of offset against applied compression force)
  11. (20) the imaginary center line of an uncompressed centering spring is continuous, while the compressed is drawn dotted
Fig. 4Fig. 4
Die Kunstlinse ist in hartem Aggregatzustand mit gestreckten Zentrierfedern hergestellt.
  1. (13) Stützlappen
  2. (21) Aufsicht einer Kunstlinse in hartem Aggregatzustand
  3. (22) Querschnitt von (21) mit gestreckten Zentrierfedern, die Stützlappen und die Enden der Zentrierfedern sind hier nicht eingezeichnet
  4. (23) im strich-punktiertem Bereich: Zentrierfedern zur Verbesserung ihrer Rückstelleigenschaften durch partielle chemische oder physikalische Nachbehandlung zusätzlich versteift
  5. (24) Zentrierfedern sind nach einer Implantation z-ähnlich gestaucht
  6. (25) Stellung der Zentrierfedern vor dem Falten und Einschieben der Kuntlinse in den Kapselsack, die Stützlappen und die Enden der Zentrierfedern sind hier eingezeichnet
The artificial lens is manufactured in hard aggregate state with stretched centering springs.
  1. (13) Support tabs
  2. (21) Top view of an artificial lens in a hard state of aggregation
  3. (22) Cross-section of (21) with extended centering springs, the support tabs and the ends of the centering springs are not shown here
  4. (23) in dash-dotted area: centering springs additionally reinforced by partial chemical or physical post-treatment to improve their recovery properties
  5. (24) Centering springs are compressed z-like after implantation
  6. (25) Position of the centering springs before folding and inserting the Cuntlinse in the capsular bag, the support tabs and the ends of the centering springs are shown here

Claims (1)

  1. Accommodating lO-lenses for replacement of muddy natural lenses and a border (1) having centralizing spring haptics (2) standing off therefrom having a z-similar cross section, having two pivots (3) one near to the lens border and the other on the outer ends of the spring haptics, having support lobes (13) on each side at the free outer ring shaped spring ends which are radially directed to the lens center to avoid only bending of the outer pivot induced by a contraction of the ciliary muscle.
EP00203860A 1999-12-14 2000-11-03 Accomodating intraocular lens Expired - Lifetime EP1108402B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19960136 1999-12-14
DE19960136 1999-12-14

Publications (3)

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EP1108402A2 EP1108402A2 (en) 2001-06-20
EP1108402A3 EP1108402A3 (en) 2003-08-27
EP1108402B1 true EP1108402B1 (en) 2006-09-20

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EP00203860A Expired - Lifetime EP1108402B1 (en) 1999-12-14 2000-11-03 Accomodating intraocular lens

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US (1) US6485516B2 (en)
EP (1) EP1108402B1 (en)
AT (1) ATE339933T1 (en)
DE (2) DE50013494D1 (en)

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US20040015236A1 (en) * 1991-11-18 2004-01-22 Sarfarazi Faezeh M. Sarfarazi elliptical accommodative intraocular lens for small incision surgery
US7662179B2 (en) 1999-04-09 2010-02-16 Sarfarazi Faezeh M Haptics for accommodative intraocular lens system
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US6485516B2 (en) 2002-11-26
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ATE339933T1 (en) 2006-10-15
US20020095212A1 (en) 2002-07-18

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